Separable fastener



F. S. CARR.

SEPARABLE FASTENER.

APPLICATION FILED 050.2,1921.

Patented Oct. 31, 1922.

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Patented @ct. 3i, i922.

STATES ilwidilfidd PATENT FRED S. CARR, OF NEWTON, MASSACHUSETTS, ASSIGNOR TO CARR FASTENER COMPANY, OF CAMBRIDGE, MASSACHUSETTS,

A CORPORATION OF MAINE.

SEPABABLE FASTENEB.

Application filed December 2, 1921.

To all whom it may concern:

Be it known that I, FRED S. CARR, a citizen of the United States, and resident of Newton, in the county of Middlesex and Commonwealth of Massachusetts, have invented an Improvement in Separable F asteners, of which the following description, in connection with the accon'ipanying drawings, is a specification, like characters on the drawings representing like parts.

This invention pertains to improvements in separable fasteners. It is among the objects of the invention to provide a separable fastener in which the stud and socket will not be likely to be separated by the resolution of forces arising from lateral strain between stud and socket.

In the drawings, which show a preferred form of one embodiment of my invention Figure l is a front elevation of the fastener;

Fig. 2 Fig. 1;

Fig. 3 a section on the line 2, being partly in elevation;

Fig. i is a rear view of the socket, being partly in elevation, on the line 4:+of Fig. 2; and

Fig. 5 is a diagrammatic view, partly in section and partly in side elevation, showing the socket and socket-attaching means prior to assembly thereof with the socket-carrying fabric.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes, I have shown a stud 33 of Fig including a head 6 and a neck 7, the stud. be-

ing secured to the socketcarrying, fabric 8 in any suitable way typified by the usual penetrating rivet 9. The preferred form of socket illustrated includes a casing 1.0 secured to the socket-car'ying fabric 11 by prongs l2 projecting therefrom and clenched within the usual socket-securing element including the cap 13, anvil plate 14: and clench plate 15. Vithin the socket casing is a spring 16 which is pueferably as illustrated, stamped from sheet metal and slit at one side as at 17 to provide for resilient expansion and contraction of the stud-receiving aperture 18.

The spring 16 may be held against rotation in the casing 10 in any suitable way, typified by the boss 19 extending inwardly from the peripheral wall of the casing and is a section on the line 22 of Serial No. 519,379.

entering the slot 17 of the spring 16. The spring 16 may be held in the casing by the usual flanged-over lip 22, which is preferably inclined inwardly and rearwardly at that side. adjacent the slot 17 in the spring, thus providing aninclined lip The socket casing should be applied to the socket-carrying fabric in such a way that the slot 17 of the spring 16 will be away from the line of strain, the in clined. lip 23 also being away from the line of strain. Thus, as viewed in Fig. 2, if the strain on the socket-carrying fabric is in the direction of the arrow A and the strain on the stud-carrying fabric is in the direction of the arrow B, the resolution of forces will tend to produce a tipping movement between stud and socket resulting in throwing the socket relative to the stud in the direction of the arrow C. In fasteners of the usual construction, this tipping movement produced by a resolution of forces arising from lateral strain between stud and socket is likely to tip the stud. and socket sufficiently to produce undesired separation. in the fastening illustrated, however, the outward movement of the casing in the direction of the arrow C causes the spring 16 to bear against the inclined lip 23 so that the latter opposes expansion of the spring and precludes separation of stud and socket. This will take place because the spring 16 is free to move in the socket casing a limited amount in a direction transverse to its general plane. Desired separation of stud and socket may be effected readily by an outward pull on the socket-carrying fabric in the direction of the arrow YD, this manipulation tipping the socket relative to the stud in a direction which frees the spring 16 from the restraining influence of the inclined lip 23.

While I have shown and described a preferred form of one embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims:

1. A separable fastener comprising, in combination, a stud having a head and a neck, and a socket comprising a casing and the spring by an expansible and contractible stud-gripping spring therein, said casing providing an inclined portion restraining the expansion of the spring by a force resultant from lateral strain between stud and socket in a predetermined direction.

2. A separable fastener comprising, in combination, a stud having a head and a neck, and a socket comprising a casing and an expansible and contractible stud-gripping spring therein, said casing providing an inclined. portion restraining the expansion of a force resultant from lateral strain between stud and socket in a predetermined direction, said spring free to move a limited amount in said casing in a direction 1 ,assyree transverse to the general plane of said spring.

3. A separab le fastener comprising, in

combination, a stud having a head and a FRED S. CARR. 

